A peptic ulcer is a sore in the lining of your stomach or your duodenum, the first part of your small ... and goes for several days or weeks Peptic ulcers happen when the acids that help you digest ...

Aphthous ulcer; Ulcer - aphthous ... Canker sores are a common form of mouth ulcer . They may occur with viral infections. In some ... spots or bump that develops into an open ulcer White or yellow center Small size (most often ...